158681667 has 8 divisors (see below), whose sum is σ = 211695120. Its totient is φ = 105728000.

The previous prime is 158681647. The next prime is 158681681. The reversal of 158681667 is 766186851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158681667 - 2¹⁸ = 158419523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158681617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8334 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (26461890).

Almost surely, 2^158681667 is an apocalyptic number.

158681667 is a deficient number, since it is larger than the sum of its proper divisors (53013453).

158681667 is a wasteful number, since it uses less digits than its factorization.

158681667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29893.

The product of its digits is 483840, while the sum is 48.

The square root of 158681667 is about 12596.8911640928. The cubic root of 158681667 is about 541.3883649760.

The spelling of 158681667 in words is "one hundred fifty-eight million, six hundred eighty-one thousand, six hundred sixty-seven".